Year	Number of Firms
1992-01-01	4
1997-01-01	7
2002-01-01	10
2003-01-01	10
2004-01-01	8
2005-01-01	13
2006-01-01	14
2007-01-01	14
2008-01-01	21
2009-01-01	20
2010-01-01	25
2011-01-01	25
2012-01-01	25
2013-01-01	21
2014-01-01	26
2015-01-01	30
2016-01-01	17